Patent GB-191329163-A (GB)
Title: Improvements in or relating to Driving or Transmission Gear.
Inventor: WADE HAROLD
IPC: F16H15/46
Filed: 1913-12-17
Granted: 1914-12-17
Abstract: 29,163. Wade, H., [Leeson, J. R.]. Dec. 17. Spindle-driving apparatus; stop-apparatus, non- automatic.-In a power transmission device for coaxial shafts, the driven shaft is started at a low speed by means of countershaft gearing which automatically accelerates the speed until the driving and driven shafts rotate at about the same velocity, and the shafts are then directly clutched together and the countershaft gearing thrown out of action, both these operations being automatic. The device is adapted especially for use on winding-machines and similar textile apparatus, in order to avoid straining or breaking the yarn or thread &c., in starting the rotation of the spindle. It is also applicable to other machines to eliminate strain and wear on the mechanism &c. As shown in Fig. 3, the driving-shaft B' is adapted to start the co-axial driven shaft B at a low speed through a countershaft I and cone-and-roller friction gearing K, L, the cone K being formed with a continuous groove k<2> in the form of a spiral or screw-thread extending from the apex to the base of the cone. The roller L which is slidably keyed to the shaft B engages the cone at the small end, and following the groove k<2> is automatically carried along the shaft, its speed of rotation being gradually increased, until it comes opposite the base of the cone, the shafts B, B<1> then rotating at about the same rate. When the roller L reaches this position it directly moves a clutch part f on the shaft B into engagement with a corresponding clutch part on the driving-shaft B<1>. Simultaneously a roller p<2> is moved by a part carrying the roller L to actuate mechanism which puts the countershaft gearing out of engagement, the power being then transmitted solely by the direct clutch drive. The initial drive is transmitted to the countershaft I by means of a bevel flange c<2> on the boss of the main belt pulley or other driving element C on the shaft B<1> frictionally gripped between a pair of disks D, D<1> on the shaft I. The sleeve G carrying the roller L is slidably keyed to the shaft B, and under the influence of the cone gear device, is moved axially along the shaft in opposition to a spring upon a separate supporting rod, the function of the spring being to return the roller L to the starting point, where it abuts against a buffer spring G<3>. This action takes place automatically when the countershaft gearing is disengaged. The countershaft I is carried in bearings, in a frame or bracket mounted so as to be free to swing on bearings on a spind'e mounted in the main frame. When an operating handle is raised, the frame is rocked to carry the countershaft gearing into engagement with the gears on the driving and driven shafts. It is held in this position by a notch in a pivoted lever engaging the upper end of an arm, which is released when the roller p<2> is forced outwards by the bevelled head g of the sleeve G, allowing the frame with the countersbaft gearing to fall out of engagement by gravity, its movement being limited by a stop on the frame. The clutch is disconnected to terminate the drive by means of an arm having a bevelled end h, which is adapted to be pressed radially against a bevelled Hange f<8> on the clutch part F. The arm with the bevelled end h forms part of a lever, rigidly connected to a second lever, operated by a rockshaft. The rock-shaft may be actuated manually or by the operation of suitable knock-off devices, coacting, for example with the part V on the shaft B. If the rock-shaft is actuated while the speeding up gear K, L is in action, the frame is released and the gear disengaged. A second flange c<3> may be provided to drive a second co-axial shaft at the opposite end of the driving-shaft B<1>, by means of similar gearing. A pair of co-axial winding-spindles could thus be driven by the shaft B<1>.